hlswebvttsink

HTTP Live Streaming WebVTT Sink

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBin
                    ╰──GstHlsBaseSink
                        ╰──hlswebvttsink

Implemented interfaces

Factory details

Authors: – Seungha Yang

Classification: – Sink/Muxer

Rank – none

Plugin – hlssink3

Package – gst-plugin-hlssink3

Pad Templates

sink

application/x-subtitle-vtt-fragmented:

Presence – always

Direction – sink

Object type – GstPad

Properties

enable-timestamp-map 

“enable-timestamp-map” gboolean

Write X-TIMESTAMP-MAP tag to WebVTT segments

Flags : Read / Write

Default value : true

location 

“location” gchararray

Location of the fragment file to write

Flags : Read / Write

Default value : segment%%05d.vtt

mpegts-time-offset 

“mpegts-time-offset” guint64

Time offset, in MPEG-TS time (90 kHz clock), corresponding to running-time zero. The default value is 324000000 (1 hour, i.e. 60 * 60 * 90000), which matches the offset used by the mpegtsmux element. If set to UINT64_MAX, the element will use a fixed EXT-X-TIMESTAMP-MAP tag (i.e. MPEGTS:0, LOCAL:00:00:00.000) without handling MPEG-TS PTS wrap-around. This can be useful when generating WebVTT playlists for fMP4-based HLS, where MPEG-TS PES timestamp wrap-around does not apply

Flags : Read / Write

Default value : 324000000

playlist-type 

“playlist-type” GstHlsSink3PlaylistType *

The type of the playlist to use. When VOD type is set, the playlist will be live until the pipeline ends execution.

Flags : Read / Write

Default value : unspecified (0)

sync 

“sync” gboolean

Sync on the clock

Flags : Read / Write

Default value : true

target-duration 

“target-duration” guint

The target duration in seconds of a segment/file. (0 - disabled, useful for management of segment duration by the streaming server)

Flags : Read / Write

Default value : 15

Named constants

GstHlsSink3PlaylistType

Members

unspecified (0) – Unspecified: The tag `#EXT-X-PLAYLIST-TYPE` won't be present in the playlist during the pipeline processing.
event (1) – Event: No segments will be removed from the playlist. At the end of the processing, the tag `#EXT-X-ENDLIST` is added to the playlist. The tag `#EXT-X-PLAYLIST-TYPE:EVENT` will be present in the playlist.
vod (2) – Vod: The playlist behaves like the `event` option (a live event), but at the end of the processing, the playlist will be set to `#EXT-X-PLAYLIST-TYPE:VOD`.

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